The Rosethorn Cache

Location: SkingradAfter you purchase the expensive Rosethorn Hall in Skingrad, go up to the top floor and look for a deer head mounted on the wall. If you run around to the right side, you'll find that you can jump up to the ledge above the deer head by using the storage shelves as a step. On top, you'll find the Long Forgotten Note. Read it to begin this quest.

The note has a cryptic message, but it really won't help you out much even if you do solve the riddle. Walk down to the basement and look for the beam that has garlic cloves hanging from it. Wedged in between the rafters and the ceiling is an hourglass. Activate it and you'll finish the quest. For your small trouble, you'll get 2 Flawless Diamonds, 2 Flawless Emeralds, 2 Flawless Sapphires, and the Ring of the Gray. This little bauble will give you a +5 fortification in Sneak, Security, Marksman, and Acrobatics. It also gives you Detect Life for 50 feet and Resist Poison 50%.